ncurses/base/lib_box.c

/****************************************************************************
 * Copyright 2020 Thomas E. Dickey                                          *
 * Copyright 1998-2010,2017 Free Software Foundation, Inc.                  *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 *     and: Thomas E. Dickey                        1996-on                 *
 *     and: Sven Verdoolaege                        2001                    *
 ****************************************************************************/

/*
**	lib_box.c
**
**	The routine wborder().
**
*/

#include <curses.priv.h>

MODULE_ID("$Id: lib_box.c,v 1.26 2020/02/02 23:34:34 tom Exp $")

#if USE_WIDEC_SUPPORT
static NCURSES_INLINE chtype
_my_render(WINDOW *win, chtype ch)
{
    NCURSES_CH_T wch;
    SetChar2(wch, ch);
    wch = _nc_render(win, wch);
    return ((attr_t) CharOf(wch)) | AttrOf(wch);
}

#define RENDER_WITH_DEFAULT(ch,def) w ## ch = _my_render(win, (ch == 0) ? def : ch)
#else
#define RENDER_WITH_DEFAULT(ch,def) w ## ch = _nc_render(win, (ch == 0) ? def : ch)
#endif

NCURSES_EXPORT(int)
wborder(WINDOW *win,
	chtype ls, chtype rs,
	chtype ts, chtype bs,
	chtype tl, chtype tr,
	chtype bl, chtype br)
{
    NCURSES_SIZE_T i;
    NCURSES_SIZE_T endx, endy;
    chtype wls, wrs, wts, wbs, wtl, wtr, wbl, wbr;

    T((T_CALLED("wborder(%p,%s,%s,%s,%s,%s,%s,%s,%s)"),
       (void *) win,
       _tracechtype2(1, ls),
       _tracechtype2(2, rs),
       _tracechtype2(3, ts),
       _tracechtype2(4, bs),
       _tracechtype2(5, tl),
       _tracechtype2(6, tr),
       _tracechtype2(7, bl),
       _tracechtype2(8, br)));

    if (!win)
	returnCode(ERR);

    RENDER_WITH_DEFAULT(ls, ACS_VLINE);
    RENDER_WITH_DEFAULT(rs, ACS_VLINE);
    RENDER_WITH_DEFAULT(ts, ACS_HLINE);
    RENDER_WITH_DEFAULT(bs, ACS_HLINE);
    RENDER_WITH_DEFAULT(tl, ACS_ULCORNER);
    RENDER_WITH_DEFAULT(tr, ACS_URCORNER);
    RENDER_WITH_DEFAULT(bl, ACS_LLCORNER);
    RENDER_WITH_DEFAULT(br, ACS_LRCORNER);

    T(("using %s, %s, %s, %s, %s, %s, %s, %s",
       _tracechtype2(1, wls),
       _tracechtype2(2, wrs),
       _tracechtype2(3, wts),
       _tracechtype2(4, wbs),
       _tracechtype2(5, wtl),
       _tracechtype2(6, wtr),
       _tracechtype2(7, wbl),
       _tracechtype2(8, wbr)));

    endx = win->_maxx;
    endy = win->_maxy;

    for (i = 0; i <= endx; i++) {
	SetChar2(win->_line[0].text[i], wts);
	SetChar2(win->_line[endy].text[i], wbs);
    }
    win->_line[endy].firstchar = win->_line[0].firstchar = 0;
    win->_line[endy].lastchar = win->_line[0].lastchar = endx;

    for (i = 0; i <= endy; i++) {
#if USE_WIDEC_SUPPORT
	if (endx > 0 && isWidecExt(win->_line[i].text[endx])) {
	    SetChar2(win->_line[i].text[endx - 1], ' ');
	}
#endif
	SetChar2(win->_line[i].text[0], wls);
	SetChar2(win->_line[i].text[endx], wrs);
	win->_line[i].firstchar = 0;
	win->_line[i].lastchar = endx;
#if USE_WIDEC_SUPPORT
	if (isWidecExt(win->_line[i].text[1])) {
	    SetChar2(win->_line[i].text[1], ' ');
	}
#endif
    }
    SetChar2(win->_line[0].text[0], wtl);
    SetChar2(win->_line[0].text[endx], wtr);
    SetChar2(win->_line[endy].text[0], wbl);
    SetChar2(win->_line[endy].text[endx], wbr);

    _nc_synchook(win);
    returnCode(OK);
}